LAMINATE, CARD, PASSPORT, METHOD FOR MANUFACTURING THEM, AND LASER MARKING METHOD

To provide base material which enables multi-color laser marking having high color development property.SOLUTION: A laminate 21 has at least two coloring layers 11A and 11B developing different colors from one another, each of at least the two coloring layers 11A and 11B contains a resin and a color...

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Hauptverfasser:	TEZUKA RIE, SHIGETOMI KIYOE
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BOOK COVERS BOOKBINDING COLOUR PRINTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LINING MACHINES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SPECIAL PRINTED MATTER STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	To provide base material which enables multi-color laser marking having high color development property.SOLUTION: A laminate 21 has at least two coloring layers 11A and 11B developing different colors from one another, each of at least the two coloring layers 11A and 11B contains a resin and a coloring agent, and a resin composition excluding the coloring agent in at least one layer out of at least the two coloring layers 11A and 11B has an absorption peak of a light transmittance spectrum in a wavelength region of 235 nm or more and 475 nm or less.SELECTED DRAWING: Figure 1 【課題】発色性の高い多色のカラーレーザーマーキングが可能な素材を提供する。【解決手段】積層体２１は、互いに異なる色に発色する少なくとも２層の発色層１１Ａ、１１Ｂを有し、少なくとも２層の発色層１１Ａ、１１Ｂそれぞれは、樹脂と発色剤とを含有し、少なくとも２層の発色層１１Ａ，１１Ｂのうちの少なくとも１層における前記発色剤を除いた樹脂組成物が、２３５ｎｍ以上４７５ｎｍ以下の波長域に光線透過スペクトルの吸収ピークを有する。【選択図】図１